you're joking | you must be ˈjoking
( informal ) used to show that you are very surprised at what sb has just said :
No way am I doing that. You must be joking!
She's going out with Dan? You're joking!
you're joking | you must be ˈjoking
( informal ) used to show that you are very surprised at what sb has just said :
No way am I doing that. You must be joking!
She's going out with Dan? You're joking!
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005